#ifndef REALMINUS_H_INCLUDED
#define REALMINUS_H_INCLUDED

#include "../realoperation.h"

class RealMinus : public RealOperation {
    private:

    public:
        RealMinus();
        // empty constructor
        ~RealMinus();
        // emtpy destructor
        char getSign();
        // return '-'
        void evaluateMe(LinkedList<double>& evaluationStack, const double* positionArray);
        // do my operation on the evaluationStack
        bool isNumber() {   return false;   };
        // no comment
        FormulaElement& copy() {    return *(new RealMinus());  };
        // returns a copy of itself
};

#endif // REALMINUS_H_INCLUDED
